Photo-effect
[医] 光效应
🧩 词语组成解析
photo
['foto]
n. 照片，相片;
vt.& vi. （给…）拍照;
🗣️ 情景例句
I hope nothing is wrong.
但愿没有事。
What time's the next train to Washington?
下一趟去华盛顿的车几点开？
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。